Merge "Geneate AndroidManifest file if the apex_test module does not have one." am: 7fbe3c7f59 am: 82371b5ac2

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/1971344

Change-Id: I56e402015b2d5d53cb6f491694cb20df916984fc